<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Google 登錄</title>
    <style>
      canvas{
        border: solid 1px #f0f0f0;
      }
    </style>
  </head>
  <body>
     <canvas id="canvas" width="500" height="400"></canvas>
     <script src="./test3.js"></script>
  </body>
</html>
